Fuse Box Mercedes W169 W245 Electrical Relay Control Module Unit A1695451740

Fuse Box Mercedes W169 W245 Electrical Relay Control Module Unit is an original electrical system component designed for A-Class and B-Class models, responsible for safe power distribution within the vehicle. Thanks to the factory Mercedes design, the fuse box ensures stable circuit operation and proper protection of key components. It is a practical service solution for diagnosing electrical faults or replacing a damaged module.

Specifications and technical data

• SKU: A1695451940-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1695451940
• Substitutable numbers: A1695451940, A 169 545 19 40, A1695451740, A 169 545 17 40, BG, A1695450540
• Category: Fuses & Fuse Boxes

Purpose and function in the electrical system

The fuse box in Mercedes W169 and W245 models acts as a central power distribution point, housing the protection for numerous vehicle circuits. It is responsible for protecting the installation against overloads and short circuits, which directly impacts the reliability of systems such as lighting, comfort controls, or specific electronic modules.

The original design ensures proper current path routing, adequate current capacity for the tracks, and compatibility with factory wiring harnesses. Consequently, replacing a damaged fuse box with a unit from the same family is a technically safe and predictable solution in terms of operation.

Benefits of using an original fuse box

Using a factory fuse box in a Mercedes W169 / W245 allows for maintaining the integrity of the entire electrical system. Key advantages include:

• Full compatibility with the installation architecture – perfect fit for factory connectors, harnesses, and mounting brackets.
• Properly selected paths and contact fields, reducing the risk of overheating under typical operating loads.
• Predictable behavior during diagnostics – the ability to use factory electrical diagrams and service procedures.
• Simplified identification of circuits and fuses, which reduces the time required for troubleshooting.

For workshops and users, this means faster replacement, lower risk of installation errors, and maintenance of operating parameters consistent with the manufacturer's specifications.

Condition, fitment, and service application

The component comes from a Mercedes vehicle and is classified in the Mercedes Fuses and Fuse Boxes group, which clearly defines its function in the vehicle. It is suitable both for standard replacement of a damaged fuse box and for more extensive electrical repairs where restoring proper power supply to individual circuits is necessary.

Before installation, it is recommended to perform a standard verification of the condition of contacts, sockets, and the housing, as well as to compare the connector layout with the unit currently installed in the car. This approach minimizes the risk of incorrect connection and helps maintain the high reliability of the entire electrical system.

Mercedes Fuses and Fuse Boxes – expansion and modernization

If you are planning a comprehensive repair or modernization of the electrical system area in your Mercedes and need other components from the same group, such as additional fuse boxes, distribution modules, or protection housings, check out the available parts in the Mercedes Fuses and Fuse Boxes category.

Technical support and electrical system development

For more advanced modernization projects – such as installing additional consumers, changing equipment configurations, or integrating accessories – it is worth expanding your knowledge on ergonomics and personalization of vehicle solutions. The article Personalization and ergonomics – when is it worth replacing the steering wheel with a premium model? may be helpful, as it demonstrates an approach to equipment modification from a functional and user-oriented perspective.